This was part of an integrated waterproofing approach and a change to the original specification. Furthermore, Xypex was chosen to help speed up the construction process. As a consequence, a cost saving was also achieved. Its proven reliability was another benefit, giving reassurance that it would provide effective, long term protection. Xypex Admix C-Series was used in the capping beam, top layer of the basement slab as a monolithic pour and in the intermediate slab perimeter. As a result, a Grade 3 (BS 8102:2009) environment was achieved.